Apparatus for making headers for water tube boilers



Oct 17, 1933. A M. uLRlcH 1,931,242

APPARATUS FOR MAKING HEADERS FOR WATER TUBE BOILERS' y; L) s 9 Q AT TORNEYS Oct. 17, 1933.

M. ULRICH APPARATUS FOR MAKING HEADERS FOR WATER TUBE BOILERS Filed March 19. 1931 2 Sheets-Sheet 2 Eg: l

MAX ULRICH.,-

BY MMM@ vATTORNEYS construction of apparatus, taken on the line IV-IV of Figure 6;

Figure is a section on the line V-V of Figure 4; u n 5 FigureV 6 is a section on the line VI--VI o f Figure`4;' v y Figure 7 is a plan view of a corrugated'water drum produced according to the invention;

Figure 8 is an end view of the same;

Figure 9 is a partial. side elevation of the upper and lower dies of a modified construction of the apparatus according to the invention,v f

In the construction according to Figures 1 to 3, 1 and 2 are the upper and lower dies respectively, which both consist of`straightline easily producible profiles, Yeach having a T-shaped longitudinal groove 3. The width ofthe profiles corresponds to the smallest externalY widthV of therwater-drums to be produced with the mold'.

To produce water-drums of other widths with' the same mold, an interposed plate 4 of suitable thickness is laid between the die 2 and one of the lateral guides 5V in the lower die (also if necessary in the upper die), andthe die 2, the interposed plate 4 and the guides 5 `are held ltogether by screws. l

. The partsl 6 Vof the mold which Yproduce the.

dip`s` of the corrugations are built up of profiled rollers whichA are easyl tol produce Yon Ia lathe.v These rollers are divided longitudinally and provided at their'v ends withprojecting yribs 6'gwhichrare rounded 01T so as to enclose` the edges of the tube to be corrugated. Said rollers are further subdivided at rightanglesto their ,l1 longitudinal axesy for the insertion of interposed plates .'7 and are held apart the' distance requiredfor vcorrugation by distance pieces 9 engaging inv groovesr and are 'connected to the dies by the lengagement .of `the'. distance .pieces 9 'in the 1grooves 3 in the dies 1 and 2. The distance 'piecesfQmay be of any other suitable shape, for example, they may correspond to the disposition of the peaks of the corrugations shown vin dottedglines. `,Ihereis howeverA no' necessity to adopt such* a measure in the case of small dis-` tances between the Ycorrugation's, as Aerlzperience hasshown thattheradius of thevcorn'ers of the tube isnot reduced at the peak of the corruga.

tion/when pressing'.` The`transitio'n from the d. corrugation to fthe straight head of 'thewaterdrumAisprovided'or `by the shaping members A1(1"and l1, whichare guided'in thev groove 3 and arefsubdivi'ded along their width for the reception 'offplates 12. The members 101 :and 11 "correspond with the rollers 6 and at their endsQare"`p`rovided with rounded oil ,andV projecting ribs 10', 11 which enclose the edges off the tube or drum'to be produced. All the members".6,`9 and 10 are pressed together by the o; screws 13'by the help of the yoke 14 and the adapters 15`which maybe advantageously guided in" the groove 3, andare thus held immovable on the dies 1 .and 2. 'v

In the modification according to Figures 4 to 6 the upper die 16 andthe lower die 17 are provided with recesses which act as bearingsKV for the solid AVrollers 18 formingV theA lower parts of the .corrugations of" the ywater-drums. To adapt thelov'ver die to the distance apartfof the lateral guides 5,the .lower die is provided `with an inter.-

' posed plate '4" ofl suitable thickness. 'The solid rollers llaredivided Atransversely to their axes, `so that bythe introduction of interposed plates 'lf ,they can at alltimes be of the desiredlength."

j The partslofthe rollerand the interposed platesthe corrugation of Vthe Water-drums to the straight end section. The sections 19 and 20 --may be dividedin the vconstruction according to "Figures 1 to 3 in similar manner to the sections l0 and 11, softhat intermediate plates may be linterposed. The. shaping members19 and '20 may be secured to the dies by means other than screws.y Furthermore the members 19 and Y20 may beso constructed that they surround the die bars as represented forthe lower section 20 V(Figure 5).v

ends with `rounded-oir projecting ribs 18 and 19', 20', respectively, as may also be seen in Y. Figures 1 to 3 which ribs enclose the edges of the Within certain limits and that the number ofthe. water-drum corrugations is independent offthe" number of` `:Ao rr'ugations in the press mold. Water chambers of different widths may also'be produced with the samel press mold by "changingA the interposed members.

I claim:

1. Means for the .production of.' cbrrugated' water-drums,A particularly` for watertube boilers, from Vstraight tubes of quadrilateral 'crosssection, consisting of lower and upper diesrdis. posed between straight lateral guides,- said diesi being provided with interchangeable lshaping members 'secured thereto, each member produc`` ing one dip of the corrugation, the shapingmembers being held apart on the dies by distance .In Figures 4 to 6, thesolid rollers 18 and the I shaping sections 19,.and 20,v are provided at their' pieces which engage on the one hand in the' Y 'shaping members and on the other in undercut grooves in the dies.

tion, consisting of' lower andupper dies disposed l 1125 2. AMeans for the production of'eorrug'ateclA Y betweenstraight lateral guides, said diesfbeing f provided with interchangeably securedprollershaped shaping members vsecured thereto, each shaping member producing a dip ofv the corrugation, the said shaping members being held the right distance apart by distance pieces.. having concavemolding faces each for the formation of acorrugationfpeak.

V3.'Means for` the production-.of corrugated waterclrums, particularly for watertnbe boilers,

from straight tubes of quadrilateral cros'ssec@4 tion, consisting of lower andvupper diesvdisposed between straight lateral guides,l saidY dies being y provided vwith [interchangeably secured rollerf-` shaped shaping members securedr tlfleret'o,Weach'f shaping memberv producing a ,dirp ""o'f the corru`' gation, the said shaping-members being heldthe 'x right distance apart by distance fpieces,and` ofr mening mennen adjoining the. 1an .fnlln shaped shaping members and gripping the straight ends of the tubes when pressing.

4. Means for the production of corrugated water-drums, particularly for watertube boilers, from straight tubes of quadrilateral cross-section, consisting of lower and upper dies disposed between straight lateral guides, `said dies being provided with interchangeably secured rollershaped shaping members secured thereto, each shaping member producing a dip of the corrugation, the said shaping members being held the right distance apart by distance pieces, and of molding members adjoining the last roller' shaped shaping members, engaging in undercut, grooves in the dies, and gripping the straightA ends of the tubes when pressing.

5. Means for the production of corrugated water-drums, particularly for watertube boilers, from straight tubes of quadrilateral cross-section, consisting of lower and upper dies disposed between straight lateral guides, said dies being provided with interchangeably secured rollershaped shaping members secured thereto, each shaping member producing a dip of the corrugation, the said shaping members being held the right distance apart by distance pieces, and of molding members adjoining the last rollershaped shaping members, and gripping the straight ends of the tubes when pressing, means being provided which hold close together the roller-shaped shaping members, the distance pieces and the molding members which hold the ends of the tubes. a

6. Means for the production of corrugated water-drums, particularlyfor watertube boilers,

from straight tubes of quadrilateral cross-sec` tion, consisting of lower and upper dies disposed between straight lateral guides, said dies being provided with interchangeably secured rollershaped shaping members secured thereto, each shaping member producing a dip` of the corrugation, the said shaping members being held the right distance apart by distance pieces, and of moldingA members adjoining the last rollershaped shaping members, and gripping the straight ends of the tubeswhen pressing, screw yokes being provided which hold close together the roller-shaped shaping members, the distance pieces and the molding members which hold the ends of the tubes.

7. Means for the production of corrugated water-drums, particularly for watertube boilers, from straight tubes of quadrilateral cross-section, consisting of lower and upper dies disposed between straight lateral guides, said dies being provided with interchangeable roller-shaped shaping members secured' thereto, each member producing one dip of the corrugation,`and which carry at their ends rounded-off Vprojecting'ribs which enclose the edges'of the tube to be corrugated. 8. Means for the production of corrugated water-drums, particularly for watertube boilers,

from straight tubes of quadrilateral cross-section, consisting of lower and upper dies disposed between straight lateral guides, having interchangeable roller-shaped shaping members secured to the dies, each shaping'member prof ducing a dip of the corrugation, and in which the shaping members are held the right distance apart by distance pieces, the roller-shaped shaping members and the distance pieces being provided at their ends with rounded-off projecting i ribs which enclose the edges of the tube be corrugated. i

9. Means for the production of corrugated Water-drums, particularly for watertube boilers, from straight tubes of quadrilateral cross-section, consisting of lower and upper dies disposed between straight lateral guides, having interchangeable roller-shaped shaping members secured to the dies, each shaping member pro` ducingl a dip of the corrugation, and in which the shaping members are held the right distance apart by distance pieces, and of shaping mem' bers which adjoin the last roller-shaped shaping members and hold the straight ends of the tube during the pressing, the roller-shaped shaping members, the distance pieces and the shaping members which hold the straight ends of the tubes being provided at their ends with rounded- 01T projecting ribs which enclose the edges of the tubeV to be corrugated.

10. Means for the production of corrugated Water-drums, particularly for watertubeboilers, from' straight tubes of quadrilateral cross-section, consisting of lower and upper dies disposed between straight lateral guides relatively adjustable with interchangeable. roller-shaped shaping members vsecured to the dies, each shaping member producing a dip of the corrugation, the said `shaping members being divided longitudinally of the tube to be corrugated, and adapters which 105 assimilate the shaping members to the width of the tube to be corrugated being interposed between the parts.

11. Means for the production of corrugated water-drums, particularlyv for watertube boilers,

from straight tubes of quadrilateral cross-sec. tion, consisting of lower and upper dies disposed between straight lateral vguides relatively adjustable with interchangeable roller-shaped shaping members secured to the dies, each shaping member producing a dip of the corrugation, the shaping members being held the right longitudinal distance apart by distance pieces, the shaping members and the distanceY pieces being v divided longitudinally of the tube to be corrugated, and adapters which assimilate the shap` ing members and the distance pieces to the .4 Width of the tube to be corrugated being interposed between the parts.`

12. Means for the production of corrugated water-drums, particularly for watertube boilers, from straight tubes of quadrilateral cross-section, consisting of lower and upper dies vdisposed between straight lateral guides relatively adjustable with shaping members secured to the dies, each shaping member producing a dip of the corrugation, the shaping members being held the right longitudinal distance apart by distance pieces, and of shaping members which adjoin the last roller-V shaped shaping members andhold the straight ends ofthe tube during' pressing, the shaping members, the distance pieces and the shaping members which grip the 'ends of the tube being divided longitudinally of the tube to be corrugated, and adapters which assimilate the shaping members, the distance pieces and the shaping members which grip the ends of the tube, to the Width of the tube to be corrugated being interposed between the parts. 145

MAX ULRICH.

interchangeablev rollershaped 

